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US4025552A - 3-(4'-Alkoxy-benzoyl)-1,2,2-trimethylcyclopentane-carboxylic acids, methods of use and compositions containing such compounds - Google Patents

3-(4'-Alkoxy-benzoyl)-1,2,2-trimethylcyclopentane-carboxylic acids, methods of use and compositions containing such compounds Download PDF

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Publication number
US4025552A
US4025552A US05/540,504 US54050475A US4025552A US 4025552 A US4025552 A US 4025552A US 54050475 A US54050475 A US 54050475A US 4025552 A US4025552 A US 4025552A
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United States
Prior art keywords
compounds
benzoyl
alkoxy
compound
trimethylcyclopentane
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US05/540,504
Inventor
Henri Ange Orzalesi
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Societe Civile Recherches et Etudes Nouvelles SCREEN
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Societe Civile Recherches et Etudes Nouvelles SCREEN
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Priority to US05/705,535 priority Critical patent/US4113960A/en
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Publication of US4025552A publication Critical patent/US4025552A/en
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00Medicinal preparations containing organic active ingredients
    • A61K31/185Acids; Anhydrides, halides or salts thereof, e.g. sulfur acids, imidic, hydrazonic or hydroximic acids
    • A61K31/19Carboxylic acids, e.g. valproic acid
    • A61K31/195Carboxylic acids, e.g. valproic acid having an amino group
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00Medicinal preparations containing organic active ingredients
    • A61K31/185Acids; Anhydrides, halides or salts thereof, e.g. sulfur acids, imidic, hydrazonic or hydroximic acids
    • A61K31/19Carboxylic acids, e.g. valproic acid
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00Medicinal preparations containing organic active ingredients
    • A61K31/21Esters, e.g. nitroglycerine, selenocyanates
    • A61K31/215Esters, e.g. nitroglycerine, selenocyanates of carboxylic acids
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C59/00Compounds having carboxyl groups bound to acyclic carbon atoms and containing any of the groups OH, O—metal, —CHO, keto, ether, groups, groups, or groups
    • C07C59/40Unsaturated compounds
    • C07C59/76Unsaturated compounds containing keto groups
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C62/00Compounds having carboxyl groups bound to carbon atoms of rings other than six—membered aromatic rings and containing any of the groups OH, O—metal, —CHO, keto, ether, groups, groups, or groups
    • C07C62/30Unsaturated compounds
    • C07C62/38Unsaturated compounds containing keto groups

Definitions

  • the invention relates to new compounds, their optical isomers, to a process of preparation thereof and to drugs containing such compounds.
  • the compounds according to the invention are formed by the 3-(4'-alkoxy-benzoyl)-1,2,2-trimethyl-cyclopentane-carboxylic acids of formula ##STR1## in which OR represents 1 or 2 alkoxy groups fixed on the phenyl group, said alkoxy group being either methoxy or ethoxy groups.
  • the invention also relates to the optical isomers of these compounds, more particularly to the isomers thereof.
  • the process according to the invention makes use of a condensation of the FRIEDEL & CRAFTS type, in the presence of aluminum chloride as a catalyst.
  • camphoric anhydrid of formula: ##STR2## camphoric anhydrid of formula: ##STR2## with the corresponding alkoxy-benzene in the presence of aluminum chloride.
  • the alkoxy-benzene and the camphoric anhydride are added in the form of a mixture to the aluminum chloride, or conversely. If need be said mixture is used in the form of a solution in a common organic solvent such as nitrobenzene or tetrachlorethane.
  • the isomers of the compounds according to the invention are obtained, in the above process, when starting from the corresponding optical isomers of the camphoric anhydrid.
  • reaction is carried out substantially as in example 1, starting however from the dextrorotatory isomer of camphoric anhydride. 10 gr. of the compound are obtained in the form of white crystals which, after crystallisation in benzene, have a melting point of 165°-166° C.
  • racemic compound is obtained starting from the racemic form of camphoric anhydride. Its melting point is of 165°-166° C.
  • the compounds according to the invention and their isomers exhibit marked therapeutical properties, particularly anorexigenic properties, as has been shown by pharmacological tests on dogs and rats.
  • the compound and isomers according to the invention are substantially devoid of toxicity.
  • Tests were performed on dogs (female Beagle dogs) having an average weight of 10 kg. and which received 100 mg/kg. of compound 1. 30 minutes thereafter they were presented their usual food, but ate less than the third of the average amount of food eaten by controls. The above dose of compound 1 was perfectly tolerated by the animals. It did not induce any substantial change in their general behaviour.
  • a reduction of the amount of food eaten was observed from the first day.
  • a reduction of the body weight started on the third day.
  • mice, for compound 1 were as follows:
  • the compounds and the isomers according to the invention are useful for the treatment of obesity and of excess weight. They are useful for inducing a reduction of the amount of food absorbed by man or animal. They are anorexigen compounds. They can be used as such, or in the form of their physiologically acceptable salts. They are preferably absorbed orally, in admixture either with a solid pharmaceutical carrier or with an orally acceptable solvent.
  • the invention also relates to the solid pharmaceutical compositions containing said compounds and to the drinkable solutions of said compounds.
  • Daily doses of about 0.200 to about 1 gr., for instance 0.250 gr. can be used. They may be used under dosage units of 0.100 to 0.500 gr.
  • the invention is also particularly concerned with the compositions containing the compounds according to the invention, in association with suppository carriers, as well as with the injectable solutions containing said compounds in association with an injectable sterile liquid.

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  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Animal Behavior & Ethology (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Pharmacology & Pharmacy (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Medicinal Chemistry (AREA)
  • Emergency Medicine (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)

Abstract

The invention relates to 3-(4'-alkoxy-benzoyl)-1,2,2-trimethyl-cyclopentane-carboxylic acids, and to their optical isomers; they are useful as active principles for anorexigenic drugs.

Description

The invention relates to new compounds, their optical isomers, to a process of preparation thereof and to drugs containing such compounds.
The compounds according to the invention are formed by the 3-(4'-alkoxy-benzoyl)-1,2,2-trimethyl-cyclopentane-carboxylic acids of formula ##STR1## in which OR represents 1 or 2 alkoxy groups fixed on the phenyl group, said alkoxy group being either methoxy or ethoxy groups.
The invention also relates to the optical isomers of these compounds, more particularly to the isomers thereof.
These compounds exhibit important anorexigenic properties, which are all the more unexpected as they contain only carbon, hydrogen and oxygen, whereas, usually, the known anorexigenic compounds also contain nitrogen in their molecule.
The process according to the invention makes use of a condensation of the FRIEDEL & CRAFTS type, in the presence of aluminum chloride as a catalyst.
More particularly, it consists in reacting camphoric anhydrid of formula: ##STR2## with the corresponding alkoxy-benzene in the presence of aluminum chloride.
Advantageously, the alkoxy-benzene and the camphoric anhydride are added in the form of a mixture to the aluminum chloride, or conversely. If need be said mixture is used in the form of a solution in a common organic solvent such as nitrobenzene or tetrachlorethane.
The isomers of the compounds according to the invention are obtained, in the above process, when starting from the corresponding optical isomers of the camphoric anhydrid.
The invention is hereafter illustrated by examples which have no limitative character.
EXAMPLE 1
The preparation of the levorotatory 3-(4'-methoxy benzoyl)-1,2,2-trimethyl-cyclopentane-carboxylic acid (compound 1):
10 GR. (0.055 MOLE) OF 1-CAMPHORIC ANHYDRID
(α.sub.D.sup.20.sup.° C. = 3.2°)
are dissolved under stirring in 162 gr. (1.5 mole) of methoxy-benzene.
14.6 GR. (0.11 MOLE) OF ALUMINUM CHLORIDE ARE ADDED PORTIONWISE, AT AMBIENT TEMPERATURE AND UNDER STIRRING, TO THE ABOVE SOLUTION. After 2 hours of stirring, the reaction mixture is decomposed by ice and a 10% solution of sulphuric acid. The mixture is extracted with ether (in toto 350 ml) and the total ether solution recovered is washed with water. The ether solution is thereafter treated with 100 ml of a 2% aqueous solution of sodium hydroxyde. The alkaline solution obtained is acidified at pH3 with an acid solution, in the present case hydrochloric acid. The crude compound which is isolated is crystallized in benzene. 10 gr. of the above identified isomer are obtained in the form of white crystals. The physical constants of the product according to the invention are as follows:
M p = 176°
[α]d 20.sup.° c. = 20°, 2 (1= 1; c = 3, chloroform)
main bands in infra-red in cm- 1 (KBr pellet): 2960, 1690, 1650, 1590, 1235, 1170, 840, 600.
EXAMPLE 2
Preparation of the dextrorotatory 3-(4'-methoxy benzoyl)-1,2,2-trimethyl-cyclopentane-carboxylic acid (compound 2).
The reaction is carried out substantially as in example 1, starting however from the dextrorotatory isomer of camphoric anhydride. 10 gr. of the compound are obtained in the form of white crystals which, after crystallisation in benzene, have a melting point of 165°-166° C.
EXAMPLE 3
Preparation of the racemic compound of 3-(4'-methoxy-benzoyl)-1,2,2-trimethyl-cyclopentane-carboxylic acid (compound 3).
In the same manner, the racemic compound is obtained starting from the racemic form of camphoric anhydride. Its melting point is of 165°-166° C.
EXAMPLE 4
One prepares in the same manner, starting each time from the corresponding alkoxybenzene, the following compounds: 3-(4'-ethoxy-benzoyl)-1,2,2-trimethyl-cyclopentane-carboxylic acid: MP = 122° C. (compound 4)
3 3-(3', 4'-dimethoxy-benzoyl)-1,2,2-trimethyl-cyclopentane-carboxylic acid: MP = 154° C. (compound 5).
The compounds according to the invention and their isomers exhibit marked therapeutical properties, particularly anorexigenic properties, as has been shown by pharmacological tests on dogs and rats.
The compound and isomers according to the invention are substantially devoid of toxicity.
Tests were performed on dogs (female Beagle dogs) having an average weight of 10 kg. and which received 100 mg/kg. of compound 1. 30 minutes thereafter they were presented their usual food, but ate less than the third of the average amount of food eaten by controls. The above dose of compound 1 was perfectly tolerated by the animals. It did not induce any substantial change in their general behaviour.
Similar tests were run on male rats of the Wistar type, having an average weight of 150 g. They were divided in groups (each of which comprised 10 animals) which were given orally the compounds 1, 2, 3, 4, and 5 respectively, in the form of a 1% solution of the tested conpounds, at a dose of 1 ml/ 100 gr. of body weight, during 5 days.
A reduction of the amount of food eaten was observed from the first day. A reduction of the body weight started on the third day.
The L D 50 obtained on mice, for compound 1, were as follows:
orally: 5 gr/kg
intraperitoneally: 500 mg/kg
intraveneously: 125 mg/kg
The compounds and the isomers according to the invention are useful for the treatment of obesity and of excess weight. They are useful for inducing a reduction of the amount of food absorbed by man or animal. They are anorexigen compounds. They can be used as such, or in the form of their physiologically acceptable salts. They are preferably absorbed orally, in admixture either with a solid pharmaceutical carrier or with an orally acceptable solvent.
Therefore, the invention also relates to the solid pharmaceutical compositions containing said compounds and to the drinkable solutions of said compounds.
Daily doses of about 0.200 to about 1 gr., for instance 0.250 gr. can be used. They may be used under dosage units of 0.100 to 0.500 gr.
They can also be administered by the rectal route or by the parenteral route. The invention is also particularly concerned with the compositions containing the compounds according to the invention, in association with suppository carriers, as well as with the injectable solutions containing said compounds in association with an injectable sterile liquid.

Claims (5)

I claim:
1. A compound having the formula; ##STR3## wherein OR represents a member of the group consisting of 3', 4'-dimethoxy, 3', 4'-diethoxy and 4'-ethoxy.
2. 3-(4'-ethoxy-benzoyl)-1,2,2-trimethylcyclopentane-carboxylic acid.
3. 3-(3',4'-dimethoxybenzoyl)-1,2,2-trimethyl-cyclopentane-carboxylic acid.
4. A method for inducing an anorexigenic condition in man or animal which comprises administering to said man or animal an anorexigenic amount of a compound according to claim 1.
5. An anorexigenic composition comprising an anorexigenic amount of a compound having the formula: ##STR4## wherein OR represents a member of the group consisting of 3', 4'-dimethoxy, 3', 4'-diethoxy, 4'-methoxy and 4'-ethoxy in association with a pharmaceutically acceptable carrier.
US05/540,504 1974-01-17 1975-01-13 3-(4'-Alkoxy-benzoyl)-1,2,2-trimethylcyclopentane-carboxylic acids, methods of use and compositions containing such compounds Expired - Lifetime US4025552A (en)

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US05/705,535 US4113960A (en) 1975-01-13 1976-07-15 3-(4'-Alkoxy-benzoyl)-1,2,2-trimethyl-cyclopentane-carboxylic acids, their optical isomers and drugs containing such compounds

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR74.01614 1974-01-17
FR7401614A FR2270856B1 (en) 1974-01-17 1974-01-17

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BE (1) BE824505A (en)
CH (1) CH591414A5 (en)
DE (1) DE2501834C2 (en)
ES (1) ES433860A1 (en)
FR (1) FR2270856B1 (en)
GB (1) GB1501201A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7655699B1 (en) 1992-04-22 2010-02-02 Eisai Inc. Compounds having selective activity for retinoid X receptors, and means for modulation of processes mediated by retinoid X receptors

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FR2481270A1 (en) * 1980-04-24 1981-10-30 Roussel Uclaf NOVEL SUBSTITUTED DERIVATIVES OF 4-PHENYL 4-OXO 2-HYDROXY BUTANOIC ACID, PROCESS FOR THEIR PREPARATION AND APPLICATIONS AS MEDICAMENTS
FR2481118A1 (en) * 1980-04-24 1981-10-30 Roussel Uclaf APPLICATION AS MEDICAMENTS OF DERIVATIVES SUBSTITUTED WITH PHENYL-4-OXO-2-BUTENOIC ACID
FR2504005A2 (en) * 1980-04-24 1982-10-22 Roussel Uclaf 4-Substd. phenyl 4-oxo-2-butenoic acids - useful for treatment of digestive tract disorders
FR2504004A1 (en) 1981-04-17 1982-10-22 Roussel Uclaf APPLICATION AS MEDICAMENTS OF PHENYL ALIPHATIC CARBOXYLIC ACID DERIVATIVES
IT1210582B (en) * 1981-10-22 1989-09-14 Roussel Maestretti Spa 4-FENYL-4-OSSOBUTEN-2-OICO ACID DERIVATIVES EQUIPPED WITH PHARMACOLOGICAL PROPERTIES AND PHARMACEUTICAL COMPOSITIONS CONTAINING THEM
FR2515037A1 (en) * 1981-10-22 1983-04-29 Roussel Uclaf AS MEDICINES, CERTAIN MONO-SUBSTITUTED DERIVATIVES OF 4-PHENYL 4-OXO BUTEN-2-OIC ACID, AND THE COMPOSITIONS CONTAINING SAME
IT1171605B (en) * 1981-10-22 1987-06-10 Roussel Maestretti Spa PHARMACOLOGICALLY ACTIVE 4-FENYL-4-OSSOBUTEN-2-OIC ACID DERIVATIVES AND PROCEDURE FOR THEIR PREPARATION
SE454355B (en) * 1983-01-24 1988-04-25 Roussel Uclaf ACRYLIC ACID DERIVATIVES CONTAINING A FURYL, PYRANYL, BENZOFURANYL, OXAZOLYL OR ISOXAZOLYL GROUP, PROCEDURES FOR PREPARING THEREOF, AND PHARMACEUTICAL COMPOSITIONS CONTAINING THEMSELVES
IT1169783B (en) * 1983-08-25 1987-06-03 Roussel Maestretti Spa DERIVATIVES OF 4-FENYL 4-BONE-BUTEN 2-OICO ACID, THEIR PREPARATION PROCEDURE AND THEIR APPLICATION AS MEDICINAL PRODUCTS
EP0253501A3 (en) * 1986-07-16 1990-04-04 Imperial Chemical Industries Plc N-disubstituted cycloalkylmethyl amines useful as fungicides

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US2132675A (en) * 1937-04-08 1938-10-11 Rohm & Haas Acylated ethers and process for making same
US3217033A (en) * 1962-04-17 1965-11-09 Merck & Co Inc Process for preparing ortho substituted benzoic acid compounds
US3624210A (en) * 1966-07-27 1971-11-30 Ortho Pharma Corp Antifertility agent
US3702853A (en) * 1970-01-13 1972-11-14 Syntex Corp Certain 5-substituted tetrahydroiso-benzofuran-1-ones
US3862239A (en) * 1967-08-22 1975-01-21 Ortho Pharma Corp Aryl substituted cyclohexenecarbinols

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US2618653A (en) * 1952-11-18 Cyclohexyl methyl ketones
DE970480C (en) * 1940-05-15 1958-09-25 Knoll Ag Process for the preparation of ª-cyclohexylisopropylmethylamine
US3182061A (en) * 1961-03-20 1965-05-04 Warner Lambert Pharmaceutical 5-[4-(p-hydroxyphenoxy)phenyl]-5-oxo-3-methylvaleric acid

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2132675A (en) * 1937-04-08 1938-10-11 Rohm & Haas Acylated ethers and process for making same
US3217033A (en) * 1962-04-17 1965-11-09 Merck & Co Inc Process for preparing ortho substituted benzoic acid compounds
US3624210A (en) * 1966-07-27 1971-11-30 Ortho Pharma Corp Antifertility agent
US3862239A (en) * 1967-08-22 1975-01-21 Ortho Pharma Corp Aryl substituted cyclohexenecarbinols
US3702853A (en) * 1970-01-13 1972-11-14 Syntex Corp Certain 5-substituted tetrahydroiso-benzofuran-1-ones

Non-Patent Citations (1)

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Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7655699B1 (en) 1992-04-22 2010-02-02 Eisai Inc. Compounds having selective activity for retinoid X receptors, and means for modulation of processes mediated by retinoid X receptors

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FR2270856B1 (en) 1978-07-21
DE2501834A1 (en) 1975-07-24
BE824505A (en) 1975-07-17
CH591414A5 (en) 1977-09-15
DE2501834C2 (en) 1987-01-08
FR2270856A1 (en) 1975-12-12
GB1501201A (en) 1978-02-15
ES433860A1 (en) 1976-11-16

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